The Canadian Bird Trends Database is a retrieval system that provides the user with information on Canadian bird species including: population trends, range distribution, and national conservation designations. Population trends are derived from Canadian Breeding Bird Survey (BBS) data and are updated on an annual basis. For species or ecozones for which BBS data are insufficient for statistical analysis, no trends are presented.

The BBS Home Page is a source of information about distributions and population changes of North American birds. It is also a tool for learning about birds, with with connections to the ID tips with pictures of common North American birds and quizzes on bird distribution and identification.

Important Notices